SOXMIX can't open input file

The following first line in my dial plan records calls.
(exten=>_0031.,1,Monitor …etc)

exten => _0031.,1,Monitor(wav,/home/monitor/${TIMESTAMP:0:8}/${TIMESTAMP:9:2}.${TIMESTAMP:11:2}to${EXTEN},m)
exten => _0031.,n,Dial(SIP/voipbuster-out/${EXTEN})
exten => _0031.,n,Congestion

Most of the times this works fine. (I have been using this for over a year)
After installing a new Linux OS (SuSE10.2) I sometimes get following error:

== Spawn extension (default, 0031164249xxx, 2) exited non-zero on ‘Local/0031164249xxx@default-5867,2’
== Spawn extension (default, 0031164249xxx, 2) exited non-zero on ‘Local/0031164249xxx@default-fb9e,2’
== Spawn extension (default, 0031164249xxx, 2) exited non-zero on ‘Local/0031164249xxx@default-0134,2’
== Spawn extension (default, 0031164249xxx, 2) exited non-zero on ‘Local/0031164249xxx@default-edd3,2’
== Spawn extension (default, 0031164249xxx, 2) exited non-zero on ‘Local/0031164249xxx@default-d1c8,2’
== Spawn extension (default, 0031164249xxx, 2) exited non-zero on ‘Local/0031164249xxx@default-3742,2’
== Spawn extension (default, 0031164249xxx, 2) exited non-zero on ‘Local/0031164249xxx@default-e9d4,2’
== Spawn extension (default, 0031164249xxx, 2) exited non-zero on ‘Local/0031164249xxx@default-f77d,2’
== Spawn extension (default, 0031164249xxx, 2) exited non-zero on ‘Local/0031164249xxx@default-a85f,2’
== Spawn extension (default, 0031164249xxx, 2) exited non-zero on ‘Local/0031164249xxx@default-e42b,2’
== Spawn extension (default, 0031164249xxx, 2) exited non-zero on ‘Local/0031164249xxx@default-4e79,2’
== Spawn extension (default, 0031164249xxx, 2) exited non-zero on ‘Local/0031164249xxx@default-7ebb,2’
== Spawn extension (default, 0031164249xxx, 2) exited non-zero on ‘Local/0031164249xxx@default-e54d,2’
== Spawn extension (default, 0031164249xxx, 2) exited non-zero on ‘Local/0031164249xxx@default-247a,2’
== Spawn extension (default, 0031164249xxx, 2) exited non-zero on ‘Local/0031164249xxx@default-91f6,2’
== Spawn extension (default, 0031164249xxx, 2) exited non-zero on ‘Local/0031164249xxx@default-88ae,2’
== Spawn extension (default, 0031164249xxx, 2) exited non-zero on ‘Local/0031164249xxx@default-f13a,2’
== Spawn extension (default, 0031164249xxx, 2) exited non-zero on ‘Local/0031164249xxx@default-7fe3,2’
== Spawn extension (default, 0031164249xxx, 2) exited non-zero on ‘Local/0031164249xxx@default-8e8f,2’
== Spawn extension (default, 0031164249xxx, 2) exited non-zero on ‘Local/0031164249xxx@default-fc06,2’
== Spawn extension (default, 0031164249xxx, 2) exited non-zero on ‘Local/0031164249xxx@default-0c22,2’
== Spawn extension (default, 0031164249xxx, 2) exited non-zero on ‘Local/0031164249xxx@default-d7d8,2’
== Spawn extension (default, 0031164249xxx, 2) exited non-zero on ‘Local/0031164249xxx@default-7701,2’
== Spawn extension (default, 0031164249xxx, 2) exited non-zero on ‘Local/0031164249xxx@default-b365,2’
== Spawn extension (default, 0031164249xxx, 2) exited non-zero on ‘Local/0031164249xxx@default-b3ee,2’
== Spawn extension (default, 0031164249xxx, 2) exited non-zero on ‘Local/0031164249xxx@default-1686,2’
== Spawn extension (default, 0031164249xxx, 2) exited non-zero on ‘Local/0031164249xxx@default-662c,2’
== Spawn extension (default, 0031164249xxx, 2) exited non-zero on ‘Local/0031164249xxx@default-5fcb,2’
== Spawn extension (default, 0031164249xxx, 2) exited non-zero on ‘Local/0031164249xxx@default-e38d,2’
== Spawn extension (default, 0031164249xxx, 2) exited non-zero on ‘Local/0031164249xxx@default-e17a,2’
== Spawn extension (default, 0031164249xxx, 2) exited non-zero on ‘Local/0031164249xxx@default-e080,2’
== Spawn extension (default, 0031164249xxx, 2) exited non-zero on ‘Local/0031164249xxx@default-21bb,2’
== Spawn extension (default, 0031164249xxx, 2) exited non-zero on ‘Local/0031164249xxx@default-492d,2’
== Spawn extension (default, 0031164249xxx, 2) exited non-zero on ‘Local/0031164249xxx@default-82d4,2’
== Spawn extension (default, 0031164249xxx, 2) exited non-zero on ‘Local/0031164249xxx@default-d142,2’
== Spawn extension (default, 0031164249xxx, 2) exited non-zero on ‘Local/0031164249xxx@default-74a5,2’
== Spawn extension (default, 0031164249xxx, 2) exited non-zero on ‘Local/0031164249xxx@default-87b4,2’
== Spawn extension (default, 0031164249xxx, 2) exited non-zero on ‘Local/0031164249xxx@default-bad0,2’
== Spawn extension (default, 0031164249xxx, 2) exited non-zero on ‘Local/0031164249xxx@default-d67e,2’
== Spawn extension (default, 0031164249xxx, 2) exited non-zero on 'Local/0031164249xxx@default-8dc5,2’
Mar 16 19:04:17 WARNING[3731]: channel.c:781 channel_find_locked: Avoided initial deadlock for ‘0x8188d10’, 10 retries!
Mar 16 19:04:17 WARNING[3731]: channel.c:781 channel_find_locked: Avoided initial deadlock for ‘0x8188d10’, 10 retries!
Mar 16 19:04:17 WARNING[3731]: channel.c:781 channel_find_locked: Avoided initial deadlock for ‘0x8188d10’, 10 retries!
Mar 16 19:04:17 WARNING[3731]: channel.c:781 channel_find_locked: Avoided initial deadlock for ‘0x8188d10’, 10 retries!
soxmix: Can’t open input file ‘//home/monitor/20070316/19.04_to_0031164249xxx-in.wav’: No such file or directory
soxmix: Can’t open input file ‘//home/monitor/20070316/19.04_to_0031164249xxx-in.wav’: No such file or directory
Mar 16 19:04:17 WARNING[3731]: channel.c:781 channel_find_locked: Avoided initial deadlock for ‘0x8188d10’, 10 retries!
soxmix: Can’t open input file ‘//home/monitor/20070316/19.04_to_0031164249xxx-in.wav’: No such file or directory
soxmix: Can’t open input file ‘//home/monitor/20070316/19.04_to_0031164249xxx-in.wav’: No such file or directory
soxmix: Can’t open input file ‘//home/monitor/20070316/19.04_to_0031164249xxx-in.wav’: No such file or directory
Mar 16 19:04:17 WARNING[3731]: channel.c:781 channel_find_locked: Avoided initial deadlock for ‘0x8188d10’, 10 retries!
soxmix: Can’t open input file ‘//home/monitor/20070316/19.04_to_0031164249xxx-in.wav’: No such file or directory
soxmix: Can’t open input file ‘//home/monitor/20070316/19.04_to_0031164249xxx-in.wav’: No such file or directory
soxmix: Can’t open input file ‘//home/monitor/20070316/19.04_to_0031164249xxx-in.wav’: No such file or directory
soxmix: Can’t open input file ‘//home/monitor/20070316/19.04_to_0031164249xxx-in.wav’: No such file or directory
Mar 16 19:04:18 WARNING[3731]: channel.c:781 channel_find_locked: Avoided initial deadlock for ‘0x8188d10’, 10 retries!
Mar 16 19:04:18 WARNING[3731]: channel.c:781 channel_find_locked: Avoided initial deadlock for ‘0x8188d10’, 10 retries!
Mar 16 19:04:18 WARNING[3731]: channel.c:781 channel_find_locked: Avoided initial deadlock for ‘0x8188d10’, 10 retries!
Mar 16 19:04:18 WARNING[3731]: channel.c:781 channel_find_locked: Avoided initial deadlock for ‘0x8188d10’, 10 retries!
soxmix: Can’t open input file ‘//home/monitor/20070316/19.04_to_0031164249xxx-out.wav’: No such file or directory
soxmix: Can’t open input file ‘//home/monitor/20070316/19.04_to_0031164249xxx-out.wav’: No such file or directory
soxmix: Can’t open input file ‘//home/monitor/20070316/19.04_to_0031164249xxx-out.wav’: No such file or directory
Mar 16 19:04:18 WARNING[3731]: channel.c:781 channel_find_locked: Avoided initial deadlock for ‘0x8188d10’, 10 retries!
soxmix: Can’t open input file ‘//home/monitor/20070316/19.04_to_0031164249xxx-out.wav’: No such file or directory
soxmix: Can’t open input file ‘//home/monitor/20070316/19.04_to_0031164249xxx-out.wav’: No such file or directory
soxmix: Can’t open input file ‘//home/monitor/20070316/19.04_to_0031164249xxx-out.wav’: No such file or directory
soxmix: Can’t open input file ‘//home/monitor/20070316/19.04_to_0031164249xxx-out.wav’: No such file or directory
Mar 16 19:04:18 WARNING[3731]: channel.c:781 channel_find_locked: Avoided initial deadlock for ‘0x8188d10’, 10 retries!
soxmix: Can’t open input file ‘//home/monitor/20070316/19.04_to_0031164249xxx-out.wav’: No such file or directory
soxmix: Can’t open input file ‘//home/monitor/20070316/19.04_to_0031164249xxx-in.wav’: No such file or directory
soxmix: Can’t open input file ‘//home/monitor/20070316/19.04_to_0031164249xxx-in.wav’: No such file or directory
soxmix: Can’t open input file ‘//home/monitor/20070316/19.04_to_0031164249xxx-in.wav’: No such file or directory
soxmix: soxmix: Can’t open input file ‘//home/monitor/20070316/19.04_to_0031164249xxx-in.wav’: No such file or directory
soxmix: Can’t open input file ‘//home/monitor/20070316/19.04_to_0031164249xxx-in.wav’: No such file or directory
soxmix: Mar 16 19:04:18 WARNING[3731]: channel.c:781 channel_find_locked: Avoided initial deadlock for ‘0x8188d10’, 10 retries!
Can’t open input file ‘//home/monitor/20070316/19.04_to_0031164249xxx-in.wav’: No such file or directory
soxmix: Can’t open input file ‘//home/monitor/20070316/19.04_to_0031164249xxx-in.wav’: No such file or directory
soxmix: Can’t open input file ‘//home/monitor/20070316/19.04_to_0031164249xxx-in.wav’: No such file or directory
soxmix: Can’t open input file ‘//home/monitor/20070316/19.04_to_0031164249xxx-in.wav’: No such file or directory
– Executing Dial(“Local/0031164249xxx@default-8176,2”, “SIP/voipbuster-out/0031164249xxx”) in new stack
Mar 16 19:04:18 WARNING[3731]: channel.c:781 channel_find_locked: Avoided initial deadlock for ‘0x8188d10’, 10 retries!
== Spawn extension (default, 0031164249xxx, 2) exited non-zero on ‘Local/0031164249xxx@default-5436,2’
– Called voipbuster-out/0031164249xxx
== Spawn extension (default, 0031164249xxx, 2) exited non-zero on ‘Local/0031164249xxx@default-8176,2’
– Got SIP response 302 “Moved temporarely” back from 194.221.62.207
soxmix: Can’t open input file ‘//home/monitor/20070316/19.04_to_0031164249xxx-in.wav’: No such file or directory
soxmix: Can’t open input file ‘//home/monitor/20070316/19.04_to_0031164249xxx-in.wav’: No such file or directory
soxmix: Can’t open input file ‘//home/monitor/20070316/19.03_to_0031164249xxx-in.wav’: No such file or directory
soxmix: Can’t open input file ‘//home/monitor/20070316/19.03_to_0031164249xxx-in.wav’: No such file or directory
soxmix: Can’t open input file ‘//home/monitor/20070316/19.04_to_0031164249xxx-out.wav’: No such file or directory
soxmix: Can’t open input file ‘//home/monitor/20070316/19.03_to_0031164249xxx-in.wav’: No such file or directory
Can’t open input file ‘//home/monitor/20070316/19.04_to_0031164249xxx-in.wav’: No such file or directory
soxmix: Can’t open input file ‘//home/monitor/20070316/19.04_to_0031164249xxx-in.wav’: No such file or directory
soxmix: Can’t open input file ‘//home/monitor/20070316/19.04_to_0031164249xxx-in.wav’: No such file or directory
soxmix: Can’t open input file ‘//home/monitor/20070316/19.04_to_0031164249xxx-in.wav’: No such file or directory
soxmix: Can’t open input file '//home/monitor/20070316/19.04_to_003

Problem: soxmix: Can’t open input file ‘//home/monitor/20070316/19.04_to_0031164249xxx-in.wav’: No such file or directory

The problem is (I think) a Linux problem and not (I think) an Asterisk problem. :unamused:
The problem does not always occur.

Anyone who can share light in this darkness?
:question: